Hang-ing cabbjage-bodies



W. DOULIN.

Carriage-Spring.

No. 25,958. Patented Nov. 1, 1859.

V V A Wiinessesr Inventor:

UNITED STATES PATENT OFFICE.

WILLIAM DOULIN, OF YOUNGSTOWN, OHIO.

HANGING CARRIAGE-BODIES.

Specification of Letters Patent No. 25,958, dated November 1, 1859*.

To all whom it may concern:

Be it known that I, WVILLIAM DOULIN, of Youngstown, in the county ofMahoning and State of Ohio, have invented certain new and usefulImprovements in Hanging Carriage-Bodies; and I do hereby declare thefollowing to be a full, clear, and exact description of the constructionand operation of the same, reference being had to the accompanyingdrawings, making a part of this specification, in which Figure 1represents a perspective view; and Fig. 2, a longitudinal sectionthrough the reaches, and springs.

Similar letters where they occur in the separate figures denote likeparts in both.

WVhen carriages drop into a depression or strike against anyobstruction, the springs are liable to be thrown out of their properpositions and buckle. The recoil t-oo,makes a heavy jar or jolt.

My purpose is to avoid these evils by a special contrivance, which Iwill hereafter describe.

I am aware that various means have been essayed to remedy the defectsmentioned, and that among them, a spiral spring has been arrangedlongitudinally upon the reach, with an arm connecting the body of thecarriage with it. This to a certain extent prevents the pitching of thebody, but does not prevent the reboundand this spiral spring too effectsbut the single purpose of counteracting the swaying of the carriagebody, while my invention makes the spring available for this, as well asfor the purpose of a spring to the load carried, and a preventative tothe recoil or rebound.

My invention consists in combining with the springs at the ends of thecarriage body, an elliptic spring on the reach, which latter has itssegments hinged to the plate, and its leaves reversedthat is placedwithin the ellipse instead of on the outer side thereof, as will beexplained.

To enable others skilled in the art to make and use my invention, I willproceed to describe the same with reference to the drawings.

A, represents the front, and B, the rear axle of a carriage, and C, D,ordinary elliptic springs placed thereon, though any other known springsmay be used on or over the axles.

E, is the usual reach, connecting the front and rear axles, and F, asecond reach parallel with the reach E. Between, and about midway of thelength of the reaches E, F is placed an elliptic spring G, parallel withthe reaches in their lengthwise direction, and secured thereto by properplates or bearings as at a, a Fig. 1.

The spring G, is constructed as follows: Its segments 6, b, b, b, arehinged to the plates a, a at the points 0, c, c, 0, so that they mayswing freely thereon on the rebound of the spring, but act as aresisting medium when any sudden weight or ar comes upon them. Theleaves (Z, (Z, of the spring G, are on the interior of the ellipse, andare rigid at the middle, and loose at their ends, but their pointsbearing against the segments 6. These leaves, so arranged prevent thecarriage body from rising suddenly or with a jar, on the rebound, asthey are assisted in rising by the segments as follows: when there is adownward surge upon the spring G, the leaves d, d, at their pointsseparate from and leave the segments Z both the leaves and segmentsresisting the downward force, but when it is removed the spring reacts,and the points of the leaves come against the segments and by theirownelasticity counteract all sudden rebound. The spring Gr, thus servesthree purposes, viz: it is a spring to the body in a vertical line, asordinary springs are :-it prevents the buckling of the front and rearsprings by holding them in vertical positions; and thirdly it takes therebound or recoil off from the other springs onto itself, and cases itoff gently.

The segments Z), are united at the points 0, in the usual manner.

Having thus fully described the nature and object of my invention what Iclaim therein as new and desire to secure by Letters Patent is Incombination with any of the ordinary springs of a carriage, an ellipticspring Gr, on the reach of the wagon, said elhptic spring beingconstructed and arranged in the manner and for the purpose herein setforth and explained.

WM. DOULIN. Witnesses:

A. B. S'roUoH'roN, E. CoI-IEN.

